Same here. And I still have accounts for all other social networks, but only read, never post.
I and everyone else I know who uses G+ hardly ever post publicly though, it's always to circles, which is probably why people think it's empty and no one uses it, because they are not in others' circles. If you are not active, people won't add you to a circle, so you won't get to see posts. Once I got into people's circles I realized that it's used so much more than I thought from just casually watching from "outside". In contrast, Facebook, Twitter and Instagram are much more oriented to posting everything publicly and lists are very difficult to manage by comparison.
